An obligate parasite, or holoparasite, is a parasitic organism that cannot complete its life-cycle without exploiting a suitable host.
Part of the Andes mountain range, Aconcagua is the second highest of the Seven Summits, behind only Mount Everest in Asia. At 22,837 feet (6,961 meters), not only is it the highest mountain in South America, it is the tallest peak in all of the Americas as well as the Southern and Western Hemispheres.
The Western Hemisphere occupies the geographic space west of the prime meridian and east of the antemeridian which lies at 180 degrees longitude. The Eastern Hemisphere is found east of the Prime Meridian and west of the antemeridian. The Only Continent That Can Be Found in All Four Hemispheres While several of the worldâs continents are traversed by the separation between two hemispheres, there is only one continent in the world that lies in all four hemispheres: Africa.